ZOOKEEPER-3801: update CI link to https://ci-hadoop.apache.org/view/ZooKeeper/

Author: Enrico Olivelli <eolivelli@apache.org>

Reviewers: Christopher Tubbs <ctubbsii@apache.org>, Mate Szalay-Beko <symat@apache.org>

Closes #1440 from eolivelli/fix/ZOOKEEPER-3801-2

pom.xml

@@ -79,7 +79,7 @@
   </issueManagement>
   <ciManagement>
     <system>jenkins</system>
-    <url>https://builds.apache.org/view/Z/view/ZooKeeper/</url>
+    <url>https://ci-hadoop.apache.org/view/ZooKeeper/</url>
   </ciManagement>
   <mailingLists>
     <mailingList>